Justin Timberlake visited The Tonight Show on Wednesday for the latest installment of the Camp Winnipesaukee skit, which finds Timberlake and Jimmy Fallon playing nerdy, curly-haired, awkward teenagers who sing nostalgic radio hits. In the past, the duo have taken on Toto’s “Africa” and Third Eye Blind’s “Jumper.” On Wednesday, they performed a version of Alanis Morissette’s “Ironic.”

Timberlake and Fallon open the segment with some seasonally appropriate banter, as the host tried to guess his friend’s Halloween costume. But the pair don’t waste much time before starting to sing a goofy version of Morissette’s famous single, switching from whispery falsettos to loud, intentionally shrill harmonies during the chorus.

The noise gains the attention of the camp counselor, Mr. Fletcher, who orders the pair of giggling “potatoheads” to go back to sleep. They keep singing, so Fletcher revokes their snack privileges. But nothing can dampen Timberlake and Fallon’s enthusiasm, and as the segment comes to a close, the pair announce that they are best friends forever.

Timberlake stopped by the show to discuss his recent mistake in the voting booth, where he posted a selfie. Though he was encouraging his fans to get out and vote, he violated state law in Tennessee by taking a photo inside a polling place.